Contacting Conductivity and Resistivity Sensors

Model	Power Requirements	Relays	Outputs	Digital Communications	Measurements
875CR	24, 100, 120, 220, 240 VAC	Two	Dual 4-20 mA	RS-232	Conductivity and resistivity
873CC	24, 100, 120, 220, 240 VAC	Two	Dual 4-20 mA, 0-10 V, or 0-20 mA note	No	Conductivity
873ACC	24, 100, 120, 220, 240 VAC	Two	Single 4-20 mA, 0-10 V, or 0-20 mA	No	Conductivity
873RS	24, 100, 120, 220, 240 VAC	Two	Dual 4-20 mA, 0-10 V, or 0-20 mA note	No	Resistivity
873ARS	24, 100, 120, 220, 240 VAC	Two	Single 4-20 mA, 0-10 V, or 0-20 mA	No	Resistivity
870ITCR	12.5 to 42 V dc, loop powered	None	Single 4-20 mA	FoxCom	Conductivity and resistivity

Contacting Conductivity and Resistivity Sensors

Model	Mounting	Temperature Sensor Type	Accuracy of 0.1 cm-1 Cell Factor	Insertion Lengths	Analyzer/Transmit-ter Compatibility
871CR	Insertion, immersion, retractable	1000 ohm 3-wire platinum RTD	0.1%	Model code selectable	875CR, 870ITCR
871CC	Insertion, immersion, retractable	100 ohm 2-wire platinum RTD or 100 Kohm 2-wire thermistor	2%	Fixed length	875CR, 873RS, 873ARS, 873CC, 873ACC, other older models